Skin tissue treatment apparatus



FIG. 1 is a rear perspective view of a skin tissue treatment apparatus, showing my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the skin tissue treatment apparatus, which form no part of the claimed design. 

CLAIM The ornamental design for a skin tissue treatment apparatus, as shown and described. 